Răspuns:
1+1=2 11+11=22 40-20=20 20-10=10
2+2=4 12+12=24 38-19=19 18-9=9
3+3=6 13+13=26 36-18=18 16-8=8
4+4=8 14+14=28 34-17=17 14-7=7
5+5=10 15+15=30 32-16=16 12-6=6
6+6=12 16+16=32 30-15=15 10-5=5
7+7=14 17+17=34 28-14=14 8-4=4
8+8=16 18+18=36 26-13=13 6-3=3
9+9=18 19+19=38 24-12=12 4-2=2
10+10=20 20+20=40 22-11=11 2-1=1
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Total: 20 adunari // 20 scaderi
Succes! :)
